Blocking calls from anonymous callers

[neville]

The marketing calls are driving me crazy. Is there a way to drop/block calls from callers with anonymous, blocked, etc. caller id?

Any other suggestions. As most of these callers switch number with each call, it is hard to block by number.

Chuck

 

[eddv123]

Hi Neville,

This should help:
https://www.3cx.com/docs/trap-and-block-anonymous-callers/

Be aware that this will block genuine callers coming in from Anonymous also.

 

[leejor]

I find that, at least in North America, telemarketers are on to that, they know that most people will not answer. I rarely see a blocked number. These days they can spoof any number they want. In many cases they will send a toll free number, or even a number with the same areacode and prefix as you, in the hopes you think is is someone local, and answer.

 

[viraltechnology]

I find that, at least in North America, telemarketers are on to that, they know that most people will not answer. I rarely see a blocked number. These days they can spoof any number they want. In many cases they will send a toll free number, or even a number with the same areacode and prefix as you, in the hopes you think is is someone local, and answer.

I agree, I receive a ton of calls that spread to come from a local area code. I then just block that call by adding them to the block list.

 

[3CXDude]

We don't use blacklists anymore.

I setup a queue with dummy extension in it and max wait time of 5 hours (18000 sec) and use CID rules to route their CLIs to it. You can usually see a pattern in the CLIs and can then use wildcards where suitable.

It gives a little pleasure to see them stuck in a Q for 5 minutes before hanging up. You can even report on it

Within 3 months or so, we went from daily calls to near 0 and I consider that a WIN

P.S. be sure to use some sort of depressing music for that Q too